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source: trunk/sources/HeuristicLab.Tests/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding-3.4/FullTreeCreatorTest.cs @ 9770

Last change on this file since 9770 was 9770, checked in by mkommend, 11 years ago

#2088: Removed useless brackets in the TestMethod attribute and added test categories and properties for SymExpTreeEncoding unit test.

File size: 3.4 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Diagnostics;
25using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
26using HeuristicLab.Random;
27using Microsoft.VisualStudio.TestTools.UnitTesting;
28
29namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Tests {
30  [TestClass]
31  public class FullTreeCreatorTest {
32    private const int POPULATION_SIZE = 10000;
33    private const int MAX_TREE_DEPTH = 9;
34    private const int MAX_TREE_LENGTH = 256;
35    private TestContext testContextInstance;
36
37
38    [TestMethod]
39    [TestCategory("Encodings.SymbolicExpressionTree")]
40    [TestProperty("Time", "long")]
41    public void FullTreeCreatorDistributionsTest() {
42      var randomTrees = new List<ISymbolicExpressionTree>();
43      var grammar = Grammars.CreateSimpleArithmeticGrammar();
44      var random = new MersenneTwister(31415);
45      var stopwatch = new Stopwatch();
46      stopwatch.Start();
47      for (int i = 0; i != POPULATION_SIZE; i++) {
48        randomTrees.Add(FullTreeCreator.Create(random, grammar, MAX_TREE_LENGTH, MAX_TREE_DEPTH));
49      }
50      stopwatch.Stop();
51      double msPerRandomTreeCreation = stopwatch.ElapsedMilliseconds / (double)POPULATION_SIZE;
52      int count = 0;
53      int depth = 0;
54      int maxLength = 0;
55      foreach (var tree in randomTrees) {
56        Util.IsValid(tree);
57        Assert.IsTrue(tree.Depth == MAX_TREE_DEPTH);
58        if (maxLength < tree.Length)
59          maxLength = tree.Length;
60        count += tree.Length;
61        depth += tree.Depth;
62      }
63
64      Console.WriteLine("FullTreeCreator: " + Environment.NewLine +
65        msPerRandomTreeCreation + " ms per random tree (~" +
66        Math.Round(1000.0 / (msPerRandomTreeCreation)) + "random trees / s)" + Environment.NewLine +
67        Util.GetSizeDistributionString(randomTrees, maxLength, 5) + Environment.NewLine +
68        Util.GetFunctionDistributionString(randomTrees) + Environment.NewLine +
69        Util.GetNumberOfSubtreesDistributionString(randomTrees) + Environment.NewLine +
70        Util.GetTerminalDistributionString(randomTrees) + Environment.NewLine +
71        "Average tree depth: " + depth / POPULATION_SIZE + Environment.NewLine +
72        "Average tree length: " + count / POPULATION_SIZE + Environment.NewLine +
73        "Maximum tree length: " + maxLength + Environment.NewLine +
74        "Total nodes created: " + count + Environment.NewLine
75        );
76      //mkommend: commented due to performance issues on the builder
77      //Assert.IsTrue(Math.Round(1000.0 / (msPerRandomTreeCreation)) > 300); // must achieve more than 300 random trees / s
78    }
79  }
80}
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